The Burevestnik patrol ship (NATO reporting name Krivak) was an anti-submarine frigate built originally for the Soviet Navy, and later served with the Russian, Ukrainian, and Indian (as the Talwar class) navies. They are armed with the Metel Anti-Ship Complex (SS-N-14 Silex), two twin 76 mm guns, 2 Osa SAM launchers, 2 RBU-6000 ASW rocket launchers, and 8 533 mm torpedo tubes.